14 Result(s)
within
English
Engineering
Classical Mechanics
Yi**g Yong
Conference Paper
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Chapter and Conference Paper
On the Use of LES with a Dynamic Subgrid-Scale Model for Optimal Control of Wall Bounded Turbulence
This paper presents techniques for optimal control of turbulent flows based on the dynamic subgrid-scale LES model. This control scheme has been implemented using a finite time-window approach where the flow s...
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Chapter and Conference Paper
On the Detwinning Mechanism in Shape Memory Alloys
Why do some materials exhibit shape memory effect while others do not? Taking steel and NiTi, for example, in both materials a martensitic transformation takes place when the temperature is lowered, and a reve...
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Chapter and Conference Paper
Dynamic Stability of Stochastic Delay Systems
This paper is aimed at examining the influence of time delays and multiplicative white noise on nonlinear dynamical systems that exhibit degenerate Hopf interactions. Our desire for this study stems from the c...
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Chapter and Conference Paper
Biotribological Properties of Carburized Titanium Alloys
A new carburization technique was developed and applied to biomedical titanium alloys by using a vacuum carburizing furnace with high temperature and sequential diffusion process to improve the surface mechani...
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Chapter and Conference Paper
Tribological Behaviors at High Load of MoS2 Films in Vacuum
MoS2 films about 1μm in thickness have been deposited on 9Cr18 steel substrate disc with dimension of Φ70mm×10mm by magnetron sputtering method. The effect of high loads (15–50N) on tribological behaviors of the ...
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Chapter and Conference Paper
Study on Friction and Wear Properties in Vacuum for γ-Ray Irradiated PTFE Coatings
The friction and wear properties in vacuum for the γ-ray irradiated PTFE coatings were measured. The effect of radiation dose, sliding velocity and load on the friction coefficient and wear loss of PTFE coatin...
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Chapter and Conference Paper
Effect of Gamma Irradiation on Friction and Wear Behavior of MoS2/Graphite Coatings in Vacuum
MoS2 based coatings with graphite were bonded on an Al substrate. the effect of gamma irradiation on the friction and wear properties of MoS2/graphite coatings in vaccum is studied under various sliding velocitie...
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Chapter and Conference Paper
Wear Behavior of Plasma-Nitrided 2Cr13 Martensitic Stainless Steel under Air and Vacuum
The wear behaviour of the plasma-nitrided 2Cr13 steel disks under air and vacuum have been investigated using a pin-on-disk type tribometer with dry sliding condition. The unnitrided pins of the same material ...
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Chapter and Conference Paper
Thermal Oxidized Coating on Surface of Titanium Alloy for Improvement of Tribological Properties in Vacuum
A hardened layer possessing good bonding strength with substrate has been prepared on the surface of aTi-6Al-4V alloy using the process of thermal oxidation followed by vacuum diffusion. The friction and wear ...
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Chapter and Conference Paper
Nonlinear Viscoelastic Nanoindentation of PVAc
A nonlinear viscoelastic nanoindentation analysis was conducted for polyvinyl acetate (PVAc) with a glass transition temperature of 29 °C. Nanoindentation using an MTS Berkovich nanoindenter was made on PVAc a...
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Chapter and Conference Paper
A New Electrothermal Microactuator with Z-shaped Beams
A new class of thermal microactuators, Z-shaped thermal actuator, is introduced in comparison with the wellestablished V-shaped thermal actuator. Though they share many features in common, Z-shaped thermal act...
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Chapter and Conference Paper
Thermodynamics and Kinetics of the Nanocheckerboard Formation
Self-assembled chessboard-like nanostructures formed by coupled displacive and diffusive phase transformation in metal and ceramic solid solutions attract both scientific and engineering interest in the fields...
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Chapter and Conference Paper
Study on Matching Characteristics of Pre-cooling Air Turbo Rocket Engine
The pre-cooling air turbo rocket (PATR) engine, designed to operate with high propulsion efficiency and within a wide operating range, is one of the most promising and effective reusable single-stage in-orbit ...
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Chapter and Conference Paper
Study on the Influence of Temperature on the Verticality of Thin-Walled High Pier and the Control Method Based on Measured Temperature
This paper presents a method for controlling the elevation of vertical molds for high piers based on measured temperature fields to address formwork deviation during the construction of the Huibai high-speed L...
